Installation: Wireless Frequency: 433.92 MHz Code: Rolling code Battery: 12V 27A Radio transmission distance: 30-100m (open area) Scope of application: Garage door, alarm, automatic door, rolling door, etc. Compatible models: Alutech AT-4, AN-Motors AT-4, Alutech AnMotors ASG1000, Alutech AnMotors AR-1-500, Alutech AT-4 600 Programming remotes to receiver required The remote control has the same function as your old remote. It must be programmed with the existing receiver following the original manual instructions. Color: Black + silver Material: ABS Package contents: 2 x Remote control Note: Light and display settings may cause slight color differences between the image and the actual item. Measurement error allowance is +/- 1-3 cm. Only the above package content is included; other items are not included.